I was all set to write this one as a lie that my mother had told so well that I had to look it up online to double-check …only to find out that it is true! http://news.sky.com/skynews/Home/Sky-News-Archive/Article/20080641293894
If you chew your hair you will get a hairball in your stomach like a cat.
When I was a child I used to chew my hair. It was disgusting. I used to get little crispy bits of hair round my face where it had dried after I had been sucking and chewing it. In an effort to stop me chewing my hair my mum and my granny would tell me that I would get a hair ball in my stomach like a cat (I had seen my cat cough up a hair ball and it was not at all pleasant.) As the idea of throwing up a big chunk of my own hair was not appealing, it worked and I stopped. For years I thought that they had successfully fooled me but they were right all along.